Chip-guard.



C. P. KLORER.

, CHIP GUARD.

APPLICATION FILED MAR. 9. 1915.

Patented Mar. 14, 1916.

UNITED STATES PATENT OFFICE.

CHARLES P. KLOBER, OF EAST CONIEmAUGH, PENNSYLVANIA, ASSIGNOR OF TWO- THIRDS TO JOSEPH E. ZANG, OF JOHNSTOWN, PENNSYLVANIA.

CHIP-GUARD.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed March 9, 1915. Serial No. 13,171.

citizen of the United States, residing at East Gonemaugh, in the county of Oambria and State of Pennsylvania, have invented certain new and useful Improvements in Chip-Guards, of which the following is a specification.

This invention relates to chip guards for lathes and similar metal working machines, and has as its object to provide a chip guard which may be readily adjusted to assume various positions with respect to the tool and work to suit the convenience of the operator of the machine, and which will effectually prevent chips of metal striking his eyes and yet will not obstruct the view.

Various types of chip guards have been devised, but they are supported in such a manner as to be capable of but a very limited adjustment, as a consequence of which it is not always possible for the operator of the machine to which they are applied to adjust them to suit his convenience, or in such manner that they will protect his eyes without obstructing his view of the work.

It is therefore one aim of the present invention to provide a chip guard so mounted that it may have practically universal adjustment and may, therefore, be adjusted to assume practically any desired position relative to the work, and will therefore enable the operator to more perfectly and quickly form the work than would otherwise be possible.

It is another aim of the invention to provide a chip guard including a frame constructed to receive and support various types of transparent panes or sheets of material suitable for use as a chip guard, the frame embodying means for securely holding the panes in place, which means may be readily manipulated to permit of the removal of one pane and the substitution of another therefor.

The-invention aims further to provide a chip guard frame so constructed that a magnifying glass or lens may be mounted therein without disturbing the pane of transparent material already in place in the frame.

Theinvention further aims to provide a novel form of universal connection between the frame of the chip guard and the support for this frame which connection will permit of practically any desired adjustment of the frame.

In the accompanying drawings: Figure 1 is a perspective view of the guard embodymg the present invention and the support for the same, the View illustrating in a general manner a portion of a lathe in connectlon with which the guard is employed; Fig. 2 1s a perspective view illustrating the parts of the chip guard frame in disassembled relatlon; Flg. 3 is a vertical sectional view through the frame, a magnifying lens being llustrated as mounted in the frame; F i 4 s a view in elevation of the frame, the new illustrating the universal joint connection in sectlon.

Corresponding and like parts are referred to in the following description and indicated 1n all the views of the accompanying drawings by the same reference characters.

As before stated, the invention includes a chlp guard proper and a support therefor. The support includes a standard 1 which is circular in cross section and which is provided at its lower end with a head 2 and above the head is threaded, as at 3. The headed end of the standard is adapted to be disposed within a T-shaped groove formed in any suitable base attached to the bed of the lathe or other machine, .or this groove may be one of the several which are ordinarily formed in the top of the machine bed. A nut 5 and washer 6 are arranged upon the threaded portion of the standard and when the nut is tightened, the washer and thehead will be brought into clamping engagement with the base so as to rigidly support the standard in upright position in a manner which will be readily understood. A bracket arm 8 is also fitted in the clamp 7 and the arm is rotatably and longitudinally adjustable in theclamp. The clamp is constructed to simultaneously grip or release the standard and bracket arm and this may be accomplished by rotating a nut 9 comprising an element of the clamp, which nut 1s provided with a handle 10 for the purpose stated. That member of the clamp in which the bracket arm 8 is fitted is rotatably adjustable with respect to that member of the clamp which fits the standard 1, the adjustment being about an axis common to the two members. A similar clamp 11 is fitted to the bracket arm 8 and engages a supporting arm 12 and it will be understood that the clamp 11 is rotatably and longitudinally ad ustable upon the bracket arm 8 and that the supporting arm 12 is both rotatably and slidably adjustable in the said clamp.

While it is not absolutely essential, it is de sirable that the bracket arm 8 be provided at its end with a goose-neck 13 which supports an electriclamp socket 14 carrying a lamp 15, the light from which of course is intended to illuminate the tool andthe work. The bracket arm 8 therefore serves two purposes, inasmuch as it constitutes a lamp sup-- port and also provides for a wider range of adjustment of the parts than would be possible if the supporting arm 12 alone were employed in connection with the clamp 7. The supporting arm 12 supports the chip guard proper'as will now be explained:

The chip guard embodying the present invention includes a frame which while here illustrated as annular in form may be rec tangular or in fact any desired shape and of course may be varied as regards its size to adapt it for use in connection with various types of machines andthis frame is indicated by the numeral 16 and is formed upon its inner surface with a continuous annular flange 17. The said inner surface of the frame between this flange and one side of the frame is cylindrical as indicated at 18 and the said inner surface at the other side of the flange is also cylindrical for a portion of its width as indicated at 19. Beyond the portion 19 the said surface is formed with an annular groove 20 and beyond the groove is flared or beveled as at 21. The frame is adapted to receive and support a pane of transparent material, such for example, as glass, celluloid, pyralin, transparent gelatin, etc.,- or a sheet of wire mesh or wire screen, or it may support a mirror.

In the drawings the numeral 22 indicates a pane of transparent pyralin which is fitted within the frame 16 and rests at its margin against the flange 17, the pane being surrounded by the cylindrical portion 19 of the inner surface of the frame. When a pane of this material is employed it is formed relatively thin, and in order that it may be 1 properly held within the frame there is provided a filler in the nature of an annulus 23 which is fitted within said frame 16 and bears against that face of the pane 22 opposite the face which rests against the flange 17. This filler 23. is also employed where transparent gelatinor asheet of wire mesh or infact any other thin pane or sheet is to be used in the frame, but where the pane or sheet is relatively thick this annulus may be dispensed with temporarily.

In order that the filler 23 maybe firmly held in place in such manner as to bear against the pane 22 or in order that a relatively thick pane may be firmly held in place in the absence of the filler 23, there is provided a resilient wire. clamping ring 24' which is open and which has a normal tendency to expand and this ring is to be congroove 20. In order that the ring may be may be engaged for the purpose of contract- Y ing the said ring. It will now be understood that a pane or foraminous sheet of the desired type may be fitted within the frame 16 and firmly. clamped therein and that whenever it is desired this pane or sheet may be readily removed and another substituted therefor.

In order that the frame may be supported at the end of the arm 12 in such manner as to permit of its universal adjustment angularly with relation to the said arm, the end of. the arm is provided with a head 26 and is threaded as indicated at 27 and the outwardly presented face of this head is concave as indicated at 28. A'collar 29 is removably threaded onto the head 26, it being preferably milled to permit of its ready application to and removal from the said head and this collar is formed with a cup or socket 30 which when the collar is assembled with the head opposes the concavity 28 so as to form a closed socket receiving the ball end 31 of a stem 32 which is fixed upon the frame 16 and projects radially therefrom, the collar being formed with an opening .33 through which the stem projects. It will now be apparent that by slightly loosening the collar 29 the stem 32 may be adjusted angularly and also rotatably so as to position the frame 16 in any desired plane and at any angle desired after which the collar may be tightened so as to hold the frame in its adjusted position.

In order that a magnifying lens, such for example as an ordinary reading lens may be supported within the frame 16 to magnify the work being formed in the lathe, the frame 16 is formed in its portion. 18 with oppositely located bayonet slots 34: which receive studs 35 which project at diametrical and after the frame 36 for the magnifying lens has been fitted into the frame 16 in such manner that the stud 35 will enter the slots 34, and the said frame 36 is rotated to cause the studs to seat in the ends of the slots, that one of the studs which has entered the slot through which the free end of the latch finger projects, will snap into engagement in the slot or opening 40 in the said finger.

From-the foregoing description of -the invention it will be understood that the supporting arms 8 and 12 may be respectively adjusted angularly with relation to the standard 1 and to the said arm 8 and that each arm may be independently rotatably adjusted and also adjusted longitudinally so as to bring the chip guard into position adjacent the work. After this has been accomplished the chip guard itself is adjusted upon its universal connection with the arm 12 in such manner as to position it at the desired angle of inclination with relationto the work.

It will be understood that while it is preferable that'the chip guard be supported by the frame structure herein shown and described, the frame of the guard may have universal connection with a rigid and nonadjustable support. It will further be understood that while the frame 16 and its relatedparts are here shown as embodied in a chip guard structure they may be put to other uses, as for example, in the mounting of any lens, mirror, or similar object regardless of the connection in which it is employed.

The frame 36 is here generally shown as employed in supporting .a lens 37 but it will be readily understood that this frame may support a mirror or a sheet of wire gauze or the like and therefore in the appended claims the term vision member is intended to include a lens, a mirror, a sheet of wire gauze, or in fact any member through the medium of which the work may be viewed.

Having thus described the invention, what is claimed as new is:

1. In a device of the class described, a frame provided with slots opening through one edge thereof, a frame removably fitted within the first mentioned frame and provided with studs engaging in the said slots, a vision member mounted in the second mentioned frame, and a resilient latch finger carried by the first mentioned frame adjacent one of the said slots and having a socket to receive one of the said studs upon the second mentioned frame.v

2. In a device of the class described, a frame provided interiorly with a shoulder, a guard disposed within the frame and resting at its margin against'the shoulder, the frame being formed interiorly adjacent the said shoulder with a groove, a retaining ring removably'fitted in the frame and seating in the said groove and constituting means for holding the guard in position against the shoulder, the frame at the other side of the shoulder being formed with bayonet slots, a frame removably fitted into the first mentioned frame, a vision member mounted in the second mentioned frame, and studs upon the lens frame engaging in the slots in the first mentioned frame.

3. In a device of the class described, a frame provided with slots opening through one edge thereof, a frame removably fitted within .the first mentioned frame and provided with studs engaging in the said slots, a vision member mountedin the second mentioned frame, and means carried by the first mentioned frame engageable with one of said studs to prevent 'accidentaldisengagement of the studs from said slots.

4. Ina device of th ela class described, a frame provided interiorly with a seating shoulder, a lens frame disposed within the first mentioned frame and resting against the said shoulder, the first mentioned frame being formed interiorly adjacent the said shoulder with a groove, and a resilient retaining open ring disposed Within the first mentioned frame and seating in the said groove and retaining the lens frame within the first mentioned frame, the said ring being provided adjacent one of its ends with an inwardly extending bend.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES P. KLOR-ER. 1.. SJ

Witnesses:

W. H. CRUM, P. J CASSIDY. 

